wp_set_object_terms( int $object_id, string|int|array $terms, string $taxonomy, bool $append = false )
创建术语和分类关系。
Create Term and Taxonomy Relationships.
说明(Description)
将对象(post、link等)与术语和分类类型相关联。创建不存在的术语和分类关系。创建一个不存在的术语(使用slug)。关系意味着术语在分类法中分组或属于分类法。一个术语没有意义,除非通过定义它存在于哪个分类法的上下文中。
参数(Parameters)
参数 | 类型 | 说明 |
---|---|---|
$object_id | (int) | 要关联的对象。 |
$terms | (string | int | array) | 一个术语slug、单个术语id或术语slug或id的数组。将替换此分类中所有现有的相关术语。传递空值将删除所有相关术语。 |
$taxonomy | (string) | 将术语与对象相关联的上下文。 |
$append | (bool) | 如果为false,则删除术语的差异。 |
源码(Source)
/**
* Create Term and Taxonomy Relationships.
*
* Relates an object (post, link etc) to a term and taxonomy type. Creates the
* term and taxonomy relationship if it doesn't already exist. Creates a term if
* it doesn't exist (using the slug).
*
* A relationship means that the term is grouped in or belongs to the taxonomy.
* A term has no meaning until it is given context by defining which taxonomy it
* exists under.
*
* @since 2.3.0
*
* @global wpdb $wpdb The WordPress database abstraction object.
*
* @param int $object_id The object to relate to.
* @param array|int|string $terms A single term slug, single term id, or array of either term slugs or ids.
* Will replace all existing related terms in this taxonomy.
* @param string $taxonomy The context in which to relate the term to the object.
* @param bool $append Optional. If false will delete difference of terms. Default false.
* @return array|WP_Error Affected Term IDs.
*/
function wp_set_object_terms( $object_id, $terms, $taxonomy, $append = false ) {
global $wpdb;
$object_id = (int) $object_id;
if ( ! taxonomy_exists($taxonomy) )
return new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
if ( !is_array($terms) )
$terms = array($terms);
if ( ! $append )
$old_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids', 'orderby' => 'none'));
else
$old_tt_ids = array();
$tt_ids = array();
$term_ids = array();
$new_tt_ids = array();
foreach ( (array) $terms as $term) {
if ( !strlen(trim($term)) )
continue;
if ( !$term_info = term_exists($term, $taxonomy) ) {
// Skip if a non-existent term ID is passed.
if ( is_int($term) )
continue;
$term_info = wp_insert_term($term, $taxonomy);
}
if ( is_wp_error($term_info) )
return $term_info;
$term_ids[] = $term_info['term_id'];
$tt_id = $term_info['term_taxonomy_id'];
$tt_ids[] = $tt_id;
if ( $wpdb->get_var( $wpdb->prepare( "SELECT term_taxonomy_id FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id = %d", $object_id, $tt_id ) ) )
continue;
/**
* Fires immediately before an object-term relationship is added.
*
* @since 2.9.0
*
* @param int $object_id Object ID.
* @param int $tt_id Term taxonomy ID.
*/
do_action( 'add_term_relationship', $object_id, $tt_id );
$wpdb->insert( $wpdb->term_relationships, array( 'object_id' => $object_id, 'term_taxonomy_id' => $tt_id ) );
/**
* Fires immediately after an object-term relationship is added.
*
* @since 2.9.0
*
* @param int $object_id Object ID.
* @param int $tt_id Term taxonomy ID.
*/
do_action( 'added_term_relationship', $object_id, $tt_id );
$new_tt_ids[] = $tt_id;
}
if ( $new_tt_ids )
wp_update_term_count( $new_tt_ids, $taxonomy );
if ( ! $append ) {
$delete_tt_ids = array_diff( $old_tt_ids, $tt_ids );
if ( $delete_tt_ids ) {
$in_delete_tt_ids = "'" . implode( "', '", $delete_tt_ids ) . "'";
$delete_term_ids = $wpdb->get_col( $wpdb->prepare( "SELECT tt.term_id FROM $wpdb->term_taxonomy AS tt WHERE tt.taxonomy = %s AND tt.term_taxonomy_id IN ($in_delete_tt_ids)", $taxonomy ) );
$delete_term_ids = array_map( 'intval', $delete_term_ids );
$remove = wp_remove_object_terms( $object_id, $delete_term_ids, $taxonomy );
if ( is_wp_error( $remove ) ) {
return $remove;
}
}
}
$t = get_taxonomy($taxonomy);
if ( ! $append && isset($t->sort) && $t->sort ) {
$values = array();
$term_order = 0;
$final_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids'));
foreach ( $tt_ids as $tt_id )
if ( in_array($tt_id, $final_tt_ids) )
$values[] = $wpdb->prepare( "(%d, %d, %d)", $object_id, $tt_id, ++$term_order);
if ( $values )
if ( false === $wpdb->query( "INSERT INTO $wpdb->term_relationships (object_id, term_taxonomy_id, term_order) VALUES " . join( ',', $values ) . " ON DUPLICATE KEY UPDATE term_order = VALUES(term_order)" ) )
return new WP_Error( 'db_insert_error', __( 'Could not insert term relationship into the database' ), $wpdb->last_error );
}
wp_cache_delete( $object_id, $taxonomy . '_relationships' );
/**
* Fires after an object's terms have been set.
*
* @since 2.8.0
*
* @param int $object_id Object ID.
* @param array $terms An array of object terms.
* @param array $tt_ids An array of term taxonomy IDs.
* @param string $taxonomy Taxonomy slug.
* @param bool $append Whether to append new terms to the old terms.
* @param array $old_tt_ids Old array of term taxonomy IDs.
*/
do_action( 'set_object_terms', $object_id, $terms, $tt_ids, $taxonomy, $append, $old_tt_ids );
return $tt_ids;
}
更新版本 | 源码位置 | 使用 | 被使用 |
---|---|---|---|
2.3.0 | wp-includes/taxonomy.php | 19 | 18 |